Palmas one eye is swollen slightly the other is fine HELP

[henward]

My palmas, still eating like an animal, active and no signs of distress.
but noticed that one eye is slightly swollen -

was thinking of treating with melafix and salt.

Any ideas?
hope its not fatal!
help please:D

[henward]

possibility that its scratched itself while swimming or something.
though i minimise all edges in tank to be harmless.
but still could have.

i am starting to treat with melafix today and salt
but jsut wanna know if anyone seen this before.

thanks

[Cohazard]

I read of this once and I believe the guys fish had a bacterial infection and it was cured with clean water and maybe meds.

[King-eL]

Bacterial infection is probably the cause. Don't worry just add salt about 1-2 tsp per 10g. It should be fine.